Reversing-gear.



No. 812,533. I PATENTED FEB. 13, 1906. H. A. TUTTLE.

REVERSIN G GEAR.

APPLIGATION FILED APR.5, 1905.

2 SHEETSSHEET 1.

WITNESSES: INVENTOR yvw, M I if ATTORN EY can be adjusted y slight rotation of a screw-.

1h Nrrnn; srsrns PATENT @FFliGE.

HENRY A. TUTTLE, or scorn soRW LK, connneriour, ASSIGNOR o.

H. A. TUTTLE MANUFACTURING country, or scorn NORWALK, con- NEC-TICUT, A CORPOPATIUN OF DELAWARE.

fifivEFlSliiifi Giifiifin pecification bf Letters Patent.

Patented. Feb. 13, 1906.

Application filed April 6, 1996. 7 Serial IP80. 254,031.

'To all, whom it may concern:

Be it known that I, HENRY A. TUTTLE, a citizen of the United States, residing at South Norwalk, county of Fairfield, State of Connecticut, have invented a new and useful Re b b act, strong and, durable, and 1n which a arge friction area is provided, so that a load may be picked up or dropped instantly, thus giving the operator complete control of a launch in making landings.

Afurther object of the invention is to produce a reversing-gear inwhich the number of parts shall be reduced to the minimum and the shall all be sim 1e and inex' ensive to ma e, thereby great y reducing tie cost of production.

A further object of the invention is to pro duce' a reversing-gear that can be operated quickly and without reducing the s eed of the engine, without danger of brea age of parts, and without serious shock to either the engine or the reversing-gear.

A further object of the invention is to produce a reversin gear in which the friction collar which is easy of access.

A further object of the invention is to produce a reyersin -gear in which the gears and pinions shall al be of the spur type, thereby eliminating thrust and friction, which is unavoidable where beveled gears and pinions are used in which the pinions and gears are always in mesh, but either stationery or running idle except when reversing, and in which all of the pinion-studs shall be supported at both ends.

With these and other objects in view the invention consists in certain constructions and in certain parts, improvements, and combinations, which will be hereinafter described,

and then specifically pointed out in the claims hereunto appended.

In the accompanying drawings, forming a part of this specification, Figure 1 is a longitudinal section, partly in elevation, illustrating the construction and mode of operation of my novel reversing-gear; Fig 2-, a detail sectional view on the line 2 2 in Fig. 1, showing the attachment of the friction-disk carrier to the driven shaft; Fig. 3, an end eleva- .tion as seen from the left in Fig. 1, the driving-shaft being in section; and Fig. 4 is aview, partly in longitudinal section and partly in elevation, illustrating a slightly-variant form of my novel 1EVB1Sl11g-g6zif, the operating-le-' ver, and connections, which are the same in both forms, being shown in full lines in the driving position and in dotted lines in the reversing position. I

10 denotes the body, and 11 the cap, of the case, which is secured to the body in any suit able manner, as by screws 12.

13 denotes the driving-shaft, and 14 the a driven shaft, which of course lie in alinement. 15 denotes the driving-shaft gear, which is provided with a hub 16, journaled in the case and shown as secured to the shaft by means I of a key 17(see dotted lines, Fig. 1) and also, a set-screw 18.

l9 denotes the driven-shaft gear, which is provided with an elongated hub 20, journaled in a beari 21 in the case and shown as secured ti) t driven shaft by means of a key 22 and a sct-screw 23, which also locks the frictiomdisk carrier to the drivenshaft.

It will be noted that the drivemshaft gear is provided with an undercut recess, as at 25, to receive bearing 21. This undercutting of the driven gear has the double advantage of providing a long bearing and at the same time enabling me to shorten the case, thereby reducing the weight and lessening the space. required.

26 denotes a bushing which is interposed between the hub of the driven-shaft gear and the hearing, 27 a fiber washer which is interposed between the driving-shaft gear and the driven-shaft gear, and 31 a fiber washer which is interposed. between the inner face of the driven-shaft gear and the end of the bear-.

ing-shaft gear.

withthedriven-shaftgear and with pinions 29'9which I term for conveniencev single m ions, 'and'which imturn-mesh with thet rivopposite to the cap, which receivesthe friction device, the base of the recessl.specifically indicated by 33) providing a friction-surface which is engaged b .the inner friction-disk.

34 denotes metal fc friction-disks, the inner of which is adapted to bear against wall 33 and whichin the form illustrated in Fig. .1 are 'eprovided intheir outer faces with recesses-35,

which receive washers 36, preferabl'y of another kind of metal. 37 denotes the pressure or outer friction:

disk, and 38 pinswhich passflthrough the washers and engage the case to lock the washers thereto. The pressure-disk and frictiondisks are provided with angular openings which correspondwith friction disk carrier 24, shown as made angular in cross-section,

(see Fig. 2,) on which .they are mounted. v The friction-disk carrier is lobked to; the driven shaft in any suitable manner, as by set-screw -23, which also locks the hub of'fthe driven-. shaft gear thereto."

39 denotes bell-crank levers ivoted ibetween ears 4O on-the pressure-dis The innerarms of the bell-crank levers bear against a screw-collar 41, which is shown'in Fig. 1 as made cup shapedand inclosing the outer end of the friction-disk carrier. This collar. en-

a es a thread 42 on the driven shaft and is odlked at any desired-adjustment by means of a set-screw 43.

In use any wear 'u on the friction-disks or washers maybe rea ily taken up by turning the screw-collar forward on the driven shaft and looking it in place again after ad'ustmer t? The outer ends of'the bell-era c 1e-- vers bearagainst a cone 44, which may or may not be keyed to the driven'shaft, so as to rotate therewith, but move longitudinally thereon, and is provided with an external circumferential groove 45, which is engaged by rollers 46, (see dotted lines, Figs. 1 and 4,) carried by a yoke 47, to which an operatinglever .48 is rigidly secured. 1 y,

49 denotes a metallic brake-band carried by abase 50, the free ends of which are proyided with ears 51, through which a bolt 52 passes. One of the ears is provided on its outer face with a circularly-arrangcd series of inclines 53, which are engaged by corresponding inclines on an arm 54, which is pivoted on the bolt.

55 denotes a link one end of which is pivt he inclines thereon to ride us The gears and pinions are all I erases oted to arm '54 and the other to the operating-lever. Oscillation of the arm will cause inclines 53 on one of the ears of the strap an draw said ears toward each other, clamping the brake-band tightly around the body and lo cking the body against rotation.

Intheform illustrated in 4'frictiondisk carrier 24 is dispensed with and the hub 20 of'the driven-shaft gear .is provided with an ular faces 56-, which en age corresponding y-shaped openings in t e friction-disks. In this form the recesses 35 in the metallic friction disks are dispensed with and the Washers 36 are of practically the same internal diameter as the friction-disks. The screwcollar differs in shape from the other form and does not inclose the outer end of the friction-disk carrier.

Fig. 1 the design of the case and gears is changed, so as to produce a relatively shorter and more compact structur the frictionsurface of the inner disk on The cone and the hellcrank levers also difier in configuration. In

e the wall of the case being relatively increaseds- Both stru tures are, however, in principle the same.

The operation is. as follows: The position ofthe parts illustrated in the drawings-is the drivin position, inwhich thebrake and is loose, ut the friction device is tightened, so

that the parts rim solid-that is to say, the case rotates with the driving and driven shafts and allof the gears and inions are stationary. The operation of t e friction device will be readily understood from the drawings. When the operatin lever is swung toward the left, cone 44w be moved inward thereb on the driven shaft, and the outer arms 0 the bell-crank levers, which are relatively long, will ride up the cone to-.

wa'rdthe position shown in the drawings.- As the short armsof the bell-crank levers are in engagement with the inner face of screw-collar-41,itfol1ows that the pivotal oints of said levers on the pressure-disk wil be forced in ward-that is, toward the left--crowdin the pressure-diitk inward, clamping the was ers, which are locked to the case, between the metallic friction-disks, and crowding the inner- "friction-disk against wall 33 of the case. As

the friction-disks are carried by the driven shaft and the washers are locked to the case, it follows that the gearsand pinions will be locked, and the case and driven shaft must rotate with the driving-shaft.

In the mid-position of the operatingelever, which is indicated by a dotted line in Fig.

4, the friction device has been loosened by the movement of the cone which has been carried by -the operating lever toward the right. The movement of the cone toward the'rigldt' has relieved the outward ressure upon the long arms of the ,bell-cran ,levers and has conseguently relieved thepressure upon the pressure-disk, which has been transmitted to the other friction-disks and the washers and has crowded the inner frictiondiskagainst the wall of the case. course be obvious that owing to the'construction of the parts but little movement of the bell-crank levers is required to lock and release the friction device. the o crating-lever to the mid-position does not, owever, clam the brake-band about the case, which is sti 1 free. Theeli'ect, therefore, of the movement of the operating-lever to the mid-position is to leave everything loose, so that rotationlof the driving-shaft through the engagement of the single pinions with the driving-shaft gear and the engageshaft gear and driven shaft in the reverse direction; A movement of the operating-lever back to the mid-position will relieve the pressure of the brake-band on the case, so that the case will a ain be driven by the driv ing-shaft but the riven shaft will not rotate. Movement of the operatin -lever to the fullline osition will operate the friction device, whic willlohk the case and the two shafts together, so that the case and driven shaft will rotate with the driving-shaft.

Having thus described my invention, I claim 1. A reversing-gear comprising driving and driven shafts in line with each other and spurgears at their contiguous ends, the gear on' the driven shaft having an undercut recess and anelongated hub, a case having a hearing for said hub extending in said undercut recess means for locking the case against rotation, single pinions journaled in the case and engaging the driving-shaft gear and double pinlons journaled in the case and engaging the single pinions andthe driven-shaft gear.

2. A reversing-gear comprisin driving and driven shafts in line with each 05181 and spurgears at their contiguous ends, the gear on the driven shaft-having an undercut recess and an elongated hub, a case having a bearing for said hub extending into said undercut recess, single pinions journaled in the case and engaging the drivmg-shaft gear, double pinions 1ournaled in the case and engaging the single pinions and the driven-shaft gear,

It will of This movement of,

a friction-disk carrier rigidly secured to said hub, friction-disks carried thereby, washers locked to the case and means for clamping the disks and washers together and against the case to lock the driven shaft thereto.

3. A reversing-gear comprisim driving and driven shafts in line with each other and spurgears at their contiguous ends, the drivenshaft gear having an elongated hub, a rotary case having a recess in its face, single pinions journaled in the case and engaging the driving-shaft gear, double pinions journaled in the case and engaging the single pinions and the driven-shaft gear, a friction-disk carrier rigidly secured to the hub, friction-disks and washers lying in the recess in the case and means for clamping the friction-disks and washers together and against the base-wall of the recess.

4. A reversing-gear comprising driving and driven s'hafts in line with each other and spurgears at their contiguous ends, thedrivenshaft gear having an elongated hub, a rotary case, single pinions journaled in the case and engaging the driving-shaft gear, double pinions journaled'in the case and engaging the,

single pinions and the driven-shaft gear, a friction-disk carrier rigidly secured to the hub, fiictiomdisks and a pressure-disk carried by said hub, washers locked to the case, an adjustable screw-collar on the driven shaft, bell-crank levers pivoted on the pressure-disk and engaging the screw-collar and a cone sliding on the drivenshaft and acting on the bell-crank levers to clamp the pres sure-disk, friction-disks and washers together and against the case.

5. A reversing-gear comprisin driving and driven shafts in line with each ot er and spurgears at their contiguous ends, a rotary case, single pinions journaled in the case and engaging the driving-shaft gear, double pinions iournaled in the case and engaging the single ginions and the driven-shaft gear, a brakeand, an arm and intermediate connections for clamping the brake-band about the case, friction-disks carried by the driven shaft,

washers locked to the case, an adjustable screw-collar,. bell-crank levers engaging the screw-collar and acting on the friction-disks and washers, a cone sliding on the driven shaft and acting on the bell-crank levers, an operating-lever pivoted to the cone and a link connecting the operating-lever and the arm, said operating-lever at its intermediate position holding both the brake-band and the friction device loose, at one extreme of its movement clamping the brakeband and leaving the friction device loose and at the other extremeof its movement clam ing the friction-washers and leavingthe bra 'e-band loose.

6. A reversing gear comprising driving and driven shafts in line with each other and spurgears at'their contiguous ends, a rotary case, washers together and egainst the case to loek 1o .7 single pinions journaled in the case and en-- 'the case t0 t,he driven shaft.

" gaging the driving-shaft gear, double pinions In testimony whereof I 'affix my signature journaled i3 tilile case and enfgaging tle single in presenceef two witnesses-1" 5 inions an t e riven-shs t. ear, ri'ctionisks carried by the driven siiaft, Washers, HENRY T pins engaging the Washers andthe ease for Witnesses: locking thewashers against rotation and 'A, M. WOOSTER, means f0r c1a nping the friction-disks and S. W. ATHERTON. 

